Automobile jack and rest.



W.W.B.ONER. AUTOMOBILEJACK AND REST.

APPLICATION FILED AUG-3,1915.

Patented. May 21, 1918.

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WILLIAM W. BONER, 0F ESTAGADA, OREGON.

AUTOMOBILE JACK .AND REST.

To all whom it may concern:

Be it known that I, WILLIAM W. BoNnR, acitizen of the UnitedStates, residing at Estacada, in the countyof Olackamas and State of Oregon, have invented a new and useful Automobile Jack and Rest, of which the following is a specification.

The present invention relates to new and useful improvements in jacks and has particular reference to that class of jacks adapted for use in raising vehicles, the primary object of my invention being to provide a jack of the class described, which is simple in construction, strong and durable and effective in operation, thedevice being particularly adapted for use in connection with automobiles for raising the same from a floor or the like to relieve the tires of standing pressure.

Another object of my invention is to provide a vehicle raising jack of the classdescribed having new and improved raising mechanisms associated therewith, the device being adapted to operate in two movements, that is, the operating mechanism is moved to lift the jack half way, the device locked in the position to which it has been moved, and then another raising operation is performed bringing the jack to its full height. The advantages of this will appear from the detail description following.

Other objects and advantages to be derived from the use of my improved automobile jack will appear from the following detail description and the claim, taken with an inspection of the accompanying drawing, in which Figure 1 is a perspective view of a jack embodying the improvements of my invention; and

Fig. 2 is an enlarged fragmental sectional view of the operating mechanism.

Referring more particularly to the drawings, wherein similar characters of reference designate like and corresponding parts throughout the various views, 1 and 2 designate the side bars of the base frame, and 1 and 5 designate the end bars, the frame being formed of wooden stringers or the like. Of course, it is to be understood that I do not limit myself to wood, the structure disclosed in the drawings only illustrating one form of construction. For a purpose which will hereinafter appear the bar 5 is formed of scrap iron and extends beyond the stringers 1 and 2. An intermediate stringer 6 is pro- Specification of Letters Patent.

q provided therefor.

Patented May 2i, leis.

Application filed August 3, 1915. Serial No. 43,500.

vided, diagonal braces 7 and 8 extending from said stringer to the side stringers 1 and 2 for an obvious purpose. 1

The lifting frame of my invention includes side stringers 9 and 10 connected by a transverse end stringer 11. Diagonal braces 12 and 13 connect said side stringers and said end stringer for an obvious purose.

The base frame is provided with outside stringers 14 and 15 between which base frame are pivoted sets of supporting arms 16 and 17, the pivots of said arms being designated 18 and 19.

The upper free ends of thearm 16 carry the top frame, said top frame being provided with outside side stringers 20 and 21 between which andsaid top frame said sets of arms are receivable, pivots 22 and 23 being As hereinbefore set forth the free end portions of the transverse bar 5 extend beyond the side stringers 1 and 2, and engage the outside stringers forming a stop for the endmost set of arms 16 and 17 The raising mechanism of my invention includes longitudinally extending relatively short stringers 24 arranged in spaced relation and extending between the end stringer 4 and the intermediate stringer 6, bearings 25 are carried on the top marginal edges of the stringer 24: and serve to support a crank member 26 connected by means of a link 27 with the transverse stringer 11 on the top frame. This connection is best illustrated in Fig. 1, and designated 28. The free end of the crank portion is formed with a lever arm 29 extending over the stringer 6. The lever 29 is provided with a lateral extension 30.

A supporting arm 31 is pivotally mounted at 82 on one of the stringers 24c out of the path of movement of the lever 29, the upper free end of said arm 31 being provided with a V-shaped recess 33 for a purpose which will hereinafter appear. The supporting arm 31 is adapted to normally rest against the stringer 11 of the top frame, when said top frame is lowered.

In operating this type of jack, the vehicle to be lifted is brought to a position over the top frame, said frame being lowered so that it is adapted to rest on the lower frame of the jack. When in this position, the arm 29 of the crank 26 will project forwardly, and the pivoted arm 31 will rest upon the stringer 11 of said top frame. To lift the jack, the

handle 34 is engaged with the outer extremity of the lifting arm 29, and said arm is then swung upwardly to substantially vertical position. This will lift the top frame upon which the vehicle rests substantially half way, and to such a point, that the arm 31 will slide over the stringer 11, and the V-shaped recess 33 in the extremity thereof will be positioned beneath the same, and form a support for said upper frame, when thesame has been lifted, half way. This will automatically lock the upper frame in half lifted position, and allow the-handle 34 to be shift-ed from the extremity of the part 29, to the laterally projecting extension 30 thereof. When the part 29 is in this position, it is obvious that shifting thehandle 34 to the projection 30 will facilitate the operation of the jack, by renderingthe lifting operation much easier, and the lifting part more accessible. hen the position of the handle 3f has been shifted, the lever 29 is swung farther forward, to the position shown in Figs. 1 and 2' of the drawings, whereupon its extremity will rest upon the stringer 6. This additional movement will through the operation of the crank 26 and pitman connecting link 27 additionally lift the top frame to the limit of its upward movement, and slightly rearwardly pass center, whereupon the rear arms 16 and 17, will rest against the rear stringer 5, to automatically hold the top frame in lifted position.

From the above description taken in con- 1 nection with the accompanying drawings, it is thought that a clear and comprehensive understanding of the construction, opera- 'tion and advantages of my invention as em- What I claim as new and desire to secure by Letters Patent is In a jack of the character described, a stationary base frame, a movable lifting frame disposedv thereover and pivotaily connected to the same, a crank 011 said base frame, a pitman connecting said crank and the movable frame, a lever for operating said crank, a lateral extension on said lever, a detachable lever operating handle engageable at times with the free end of the lever or the extension during the lifting operation of the movable frame, and means for holding said frame when the handle is being shifted.

WV. BONER.

\Vitnesses W. A. HEYLMAN, W. C. WHITFIELD.

flopies of'this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

